Question:
Jun Yang had 5 boxes each containing an equal number of apples and 7 empty boxes as shown below. He removed 21 apples from each of the 5 boxes and packed them into 7 empty boxes. After that, each of the 11 boxes had the same number apples except for the 12th box which had only 3 apples. How many apples were there in all the 12 boxes altogether?
Solution:
![P6 / Henry Park / 2019 / SA2 / Paper 2 – Q03 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/06/P6_Henry_Park_2019_Prelims_Paper2_Q03-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Catholic High / 2020 / SA2 Prelims / Paper 1 – Q11 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/06/P6_SA2_2020_Catholic_High_Paper1_Q11-Qns.jpg?resize=400%2C260&ssl=1)